<template>
    <el-container class="home-container">
        <!-- 头部 -->
        <el-header>
            <div>
                <img src="../assets/heima.png" alt="">
                <span>电商后台管理系统</span>
            </div>
            <el-button type="info" @click="loginout">退出</el-button>
        </el-header>
        <!-- 页面主体 -->
        <el-container>
            <!-- 侧边栏 -->
            <el-aside :width="isCollapse? '64px' : '200px'">
                <div class="toggle-button" @click="toggleCollapse">|||</div>
                <!-- 侧边栏菜单区域 -->
                <el-menu background-color="#333744" text-color="#fff" active-text-color="#409FFF" :unique-opened="true" :collapse="isCollapse" :collapse-transition="false" :router="true" :default-active="activePath">
                <!-- 一级菜单 -->
                <el-submenu :index="item.id + '' " v-for="item in menulist" :key="item.id">
                    <!-- 一级菜单模板区 -->
                    <template slot="title">
                    <i :class="iconsObj[item.id]"></i>
                    <span>{{item.authName}}</span>
                    </template>
                        <!-- 二级菜单 -->
                        <el-menu-item :index="'/'+ subItem.path + '' " v-for="subItem in item.children" :key="subItem.id" @click="savaNavState('/'+ subItem.path)">
                            <template slot="title">
                            <i class="el-icon-menu"></i>
                            <span>{{subItem.authName}}</span>
                            </template>
                        </el-menu-item>
                </el-submenu>
                </el-menu>
            </el-aside>
            <!-- 右侧主体 -->
            <el-main>
                <router-view>

                </router-view>
            </el-main>
        </el-container>
    </el-container>
</template>

<script>
export default {
    data(){
        return {
            menulist: [],
            iconsObj: {
                '125': 'iconfont icon-user',
                '103': 'iconfont icon-tijikongjian',
                '101': 'iconfont icon-shangpin',
                '102': 'iconfont icon-danju',
                '145': 'iconfont icon-baobiao',
            },
            //是否折叠
            isCollapse: false,
            // 被激活的链接地址
            activePath: '',
        }
    },
    created() {
        this.getMenuList()
        this.activePath = window.sessionStorage.getItem('activePath')
    },
    methods: {
        loginout(){
            window.sessionStorage.clear()
            this.$router.push("/login")
        },
        // 获取所有的菜单
        async getMenuList(){
            const { data: res} = await this.$http.get('menus');
            if(res.meta.status !== 200 ) return this.$message.error(res.meta.msg);
            this.menulist = res.data;
            console.log(res);
        },
        // 点击按钮切换菜单的折叠和展开
        toggleCollapse(){
            this.isCollapse = !this.isCollapse
        },
        savaNavState(activePath) {
            window.sessionStorage.setItem('activePath', activePath)
            this.activePath = activePath
        }
    }
}
</script>

<style lang="less" scoped>
    .home-container {
        height: 100%;
        width: 100%;
    }
    .el-header {
        background-color: #37314d;
        display: flex;
        justify-content: space-between;
        padding-left: 0px;
        align-items: center;
        color: #fff;
        font-size: 20px;
        > div {
            display: flex;
            align-items: center;
            span {
                margin-left: 15px;
            }
        }
    }
    .el-aside {
        background-color: #333744;
        .el-menu {
            border-right: none;
        }
    }
    .el-main {
        background-color: #EAEDF1;
    }
    .iconfont {
        margin-right: 10px;
    }
    .toggle-button {
        background-color: #4A5064;
        font-size: 10px;
        line-height: 24px;
        color: #fff;
        text-align: center;
        letter-spacing: 0.2em;
        cursor: pointer;
    }
</style>